Gordon، Abraham M. (مارس 1962). "Abraham Lincoln – a medical appraisal". Kentucky Medical Association. ج. 60 ع. 60: 249–253. ISSN:0023-0294. PMID:13900423.
Gordon، Abraham M. (مارس 1962). "Abraham Lincoln – a medical appraisal". Kentucky Medical Association. ج. 60 ع. 60: 249–253. ISSN:0023-0294. PMID:13900423.